Okay, I seriously don't know what to do about the broken images. And it's random images, not all of them, and it happens in different places. This forum will sometimes yield broken images, and it seems to be random what images are broken. Tumblr is weird; my dash will almost always eventually load all images, but actual tumblr blogs will only load random images while breaking others. Unless I open a blog through tumblr search, where, instead of loading the entire page, it opens up a side frame thing (tumblr users on here might know what I'm talking about); if I view a blog like that, all the images load.
I've reinstalled flash, I've uninstalled flash (relying solely on the built-in pepper plugin), I've reinstalled Chrome, I've done full scans with Avast and Malewarebytes, I've disabled AdBlock, I've opened pages in incognito, I've emptied caches and deleted cookies, I've disabled all my extensions; none of it solved the problem.
Does anyone here have any idea what could possibly be causing random images to break in random circumstances?